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United Parcel Service Inc. (UPS) employee Mike Hill arranges packages for delivery in Washington, D.C., U.S., on Monday, July 22, 2013. UPS is expected to release earnings data on July 23. Photographer: Andrew Harrer/Bloomberg via Getty Images

United Parcel Service Inc. (UPS) employee Mike Hill arranges packages for delivery in Washington, D.C., U.S., on Monday, July 22, 2013. UPS is expected to release earnings data on July 23. Photographer: Andrew Harrer/Bloomberg via Getty Images